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Can we talk about the weird pink granite I found near my house in Boise?
I was clearing a spot for a shed last week and hit a patch of rock that was this bright pink color, which I've never seen around here before. It turned out to be a big chunk of pink granite with these huge, perfect feldspar crystals, about the size of my thumb. Has anyone else in Idaho found something like this, or know what might have caused it to form here?
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marymorgan19d ago
That's a really cool find. I grew up near the Idaho Batholith, which is a huge mass of granite under a lot of central Idaho. The pink color usually comes from a lot of potassium feldspar. Did you notice if the crystals were more rectangular or did they have a weird, wavy kind of shape to them?
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hart.ryan19d ago
Oh wow, that's super specific! They were mostly blocky, like little pink rectangles. I didn't see any wavy shapes. That's so cool you grew up near that, I had to look up what a batholith is. Makes total sense about the feldspar. It's neat to know what actually causes the color.
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